A neighbour's Ubuntu 10.04 machine has five serial ports, one on the motherboard and four on a PCI card. However, only four cards are showing:
The motherboard card is ttys0. All five ports work in Windows, and replacing the PCI card with another identical, known good card showed the same results. Any ideas what could be wrong?
hi
i am using solaris 9 on sparc .
i was wondering if there was a command to control my serial interface , as to send a signal periodically every interval of time to the input of a 555 timer .
thanks for your help .... (0 Replies)
I think my serial port(on board) is not working ......
because when I am running same code on two machines its working good....but when my system comes into picture ....it doesnt show any output comming from serial port..........
can anybody tell me how to configure my serial port.........or to... (16 Replies)
Hi,
I am working with Sun Solaris 9 Sparc,Sun-Blade-100.In my application,I need to monitor the UPS using Serial port.
When I am using JRE 1.4 in my application,I am able to monitor it but when I am upgrading the JRE version from 1.4 to JRE1.6. I am not able to monitor the UPS.It is showing the... (1 Reply)
Hi,
I am working with solaris 9,SUN-Blade-100 and I want to communicate with the Serial port.To check whether the port is working or not.I write code and when I execute the file,then I got the output--
According to this,serial port is not found.can anyone please tell me how to configure the... (1 Reply)
I have a need to determine when a string has been completely sent via a serial port from a standard 'C' application. The code is as follows:
SerialPort_Send = open (pPortString, O_WRONLY | O_NOCTTY | O_NONBLOCK);
write (SerialPort_Send, pCommandString, strlen (pCommandString));
... (2 Replies)
Hi,
How can i configure my modem in AIX thru serial port (sa0-->tty0)
I have two port serial card configured as sa0
I created tty1 which port is tty0 and which port is tty1 how can i know?? (1 Reply)
Hi,
I have a external board connected to my serial port. I need to execute "shutdown -r now" command when system boot up. When system boots up it requires a username ans password. Then I need to run my command. I can use rc script but that is rebooting system before it asks for username and... (0 Replies)
Hi Everyone,
In my environment, I have few T5220. On the iLOM Management Card, I have both Network and Serial port are cabled, I don't have any issues while I try to connect using Network Management port, but when I try to connect the serial port for the same server which is actually connected... (3 Replies)
I am using ReflectionX on a windows PC to run an application on a Solaris box. The application uses the serial port and expects a definition like: /dev/ttyb
Is there a way to use the PC serial port through ReflectionX?
PC is running Windows-XP
Solaris Box is:
Sun Microsystems sun4u... (1 Reply)
Hello,
I have an unloaded T5140 machine and want to access the ILOM for the first time and subsequently the network port after that., and then load Solaris 10 the final January 2011 build.
The first part is what confuses me -the cabling.
I am coming from a Windows machine (w/appropriate... (5 Replies)
Discussion started by: joboy
5 Replies
LEARN ABOUT NETBSD
ntwoc
NTWOC(4) BSD Kernel Interfaces Manual NTWOC(4)NAME
ntwoc -- Riscom/N2, N2pci, WANic 400 synchronous serial interfaces
SYNOPSIS
ntwoc* at pci? dev ? function ? flags 0
ntwoc0 at isa? port 0x300 irq 5 iomem 0xc8000 flags 1
DESCRIPTION
The ntwoc device driver supports bit-synchronous serial communication using Cisco HDLC framing. The cards are capable of being driven by the
line clock or from an internal baud rate generator. The devices all use the Hitachi hd64570 serial chip. The hd64570 supports 2 asynchro-
nous/byte-synchronous/bit-synchronous serial ports, and has a 4-channel DMA controller for loading the serial port FIFOs.
The ISA Riscom/N2 card has a jumper block to set the IRQ and a DIP switch to set the port address the card will use. The values programmed
into the card must be specified with the port and irq locators in the kernel configuration line. The iomem locator must be specified and
must occur on a 16k boundary. The driver uses a 16k region of io memory. Bit 0 of the flags locator indicates if there is a second serial
port available on the card.
Currently clock source and speed information is specified with the flags locator in the kernel configuration file. The flags field has the
following format.
3 2 1
1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
+-------------+ +-----+ +-----+ + +---+ +-+ + +---+ +-+ +
tmc tdiv rdiv e1 rxs1 ts1 e0 rxs0 txs0 np(*)
tmc Defines the timer constant. The base clock frequency is divided by tmc to generate the main clock for receiving and sending.
Further division is possible with the tdiv and rdiv divisor options. A value of 0 is treated as 256.
tdiv Defines the transmit divisor as 2^(tdiv). The internal transmit clock frequency is determined by dividing the base clock fre-
quency by tmc and then dividing by 2^(tdiv).
rdiv Defines the receive divisor as 2^(rdiv). The internal receive clock frequency is determined by dividing the base clock frequency
by tmc and then dividing by 2^(rdiv).
e0 e1 If true the internal clock source is used to drive the line clock for port 0 or port 1 respectively.
rxs0 rxs1 Specifies which clock source to use for receiving data on port 0 and port 1 respectively. The following values are accepted:
0
Line clock.
1
Line clock with noise suppression.
2
Internal clock.
txs0 txs1 Specifies which clock source to use for transmitting data on port 0 and port 1 respectively. The following values are accepted:
0
Line clock.
1
Internal clock.
2
Receive clock.
np (For the ISA card only) A value of 1 indicates there is a second serial port present on the card. This is auto-detected on the
PCI card and need not be specified.
HARDWARE
Cards supported by the ntwoc driver include:
SDL Communications Riscom/N2
SDL Communications N2pci
SDL Communications WANic 400 (untested)
DIAGNOSTICS
ntwoc0: TXDMA underrun - fifo depth maxed Indicates that the serial port's FIFO is being drained faster than DMA can fill it. The driver
automatically increases the low-water mark at which to begin DMA transfers when underruns occur. This diagnostic is issued when the low-
water mark is maximized (i.e., 1 less than the depth of the FIFO).
ntwoc0: RXDMA buffer overflow Indicates that a frame is being received by the card, but there are no free receive buffers.
SEE ALSO intro(4), isa(4), pci(4), ifconfig(8)HISTORY
The PCI driver first appeared in NetBSD 1.4. Much of the ISA driver was adapted from the FreeBSD sr driver and first appeared in NetBSD 1.5.
BUGS
Use of the flags locator for setting the clock sources and speeds should be replaced with ioctl's and a control program.
BSD October 2, 1998 BSD